Early rheumatoid arthritis in Finland.
D000328:Adult; D017677:Age Distribution; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000175:diagnosis* / Q000453:epidemiology* / Q000628:therapy; D015331:Cohort Studies; D003131:Combined Modality Therapy; D018450:Disease Progression; D005260:Female; D005387:Finland / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D016059:Range of Motion, Articular / Q000502:physiology; D018570:Risk Assessment; D012720:Severity of Illness Index; D017678:Sex Distribution